Sensor



FIG. 1 is a schematic view showing the sensor of my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear schematic view thereof; and

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a sensor, as shown and described. 